Reward your card selection with card draw, and do it with scry's cousin surveil too
As you get to cast it twice and as each half provides you with a suitably annoying board presence that you generally have to deal with it you can fairly easily turn Lingering Souls into a two for one at worst
Court of Cunning Court of Cunning is one of the best self-mill enablers in EDH, assuming you keep the crown
It helps preserve your valuable original cards from wear and tear, and it lets you test different strategies without sinking money into new singles
I am a big fan of the Lore (and the Three Kingdoms equivalent version) as they can find a selection of the premium non-basics as well as providing the land untapped

Abu Ja'far Akroma's Vengeance Austere Command Avenge Awaken the Maelstrom Battering Ram Begin Anew Breaking Point Catastrophe Ceaseless Conflict Citywide Bust Cleanse Cleansing Nova Cloud's Limit Break Cockatrice Damning Verdict Day of Judgment Decree of Annihilation Defiant Vanguard Depopulate Desolation Giant Devastation Don't Move Doomskar Dusk // Dawn Elspeth, Sun's Champion End Hostilities Expel the Interlopers Fated Clash Fated Retribution Fell the Mighty Fight to the Death Final Showdown Fumigate Giant Albatross Gideon Jura Glyph of Reincarnation Goblin Pyromancer Guan Yu's 1,000-Li March Harsh Mercy Hearth Charm Heat Stroke Hour of Reckoning Indrik Umbra Infinite Authority Isle of Vesuva Join Shields Jokulhaups Kirtar's Wrath Kjeldoran Frostbeast Localized Destruction Mageta the Lion Magus of the Disk March of Souls Martial Coup Mass Calcify Mogg Infestation Myojin of Cleansing Fire Myr Matrix Nevinyrral's Disk No Witnesses Novablast Wurm Obliterate Organic Extinction Phyrexian Rebirth Planar Collapse Planar Outburst Planewide Disaster Puppet's Verdict Raiding Party Realm-Cloaked Giant
